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Re: [PATCH] Fix -fpic/-fPIC virtual thunks on s390 -m31
On Fri, Jun 20, 2003 at 08:03:03PM +0200, Ulrich Weigand wrote:
> Unfortunately, as Joern pointed out this doesn't work either right now.
I'm working on a patch for that.
Nevertheless, at least for GCC 3.3 branch we should IMHO live with
thunk calls going through GOT and even on the trunk it means
output_mi_thunk is more robust.
> I've just one suggestion to improve the code for the -fPIC case: you
> could try to use @GOTENT. This is not normally used on 31-bit, so I'm
> not sure binutils support is correct, but it is supposed to work. The
> code would then look like this:
> basr %r1,0
> a %r1,.L7-.L6(%r1)
> l %r1,0(%r1)
> br %r1
> .align 4
> .long the_function@GOTENT-.L6
> (In fact this is just as efficient as the -fpic case, so the two
> could actually be merged.)
Apparently this does not work (at least not with almost a month old gas):
/tmp/I.s: Assembler messages:
/tmp/I.s:8: Error: relocation not applicable